./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:04:50,958 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:04:51,082 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 22:04:51,087 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:04:51,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:04:51,114 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:04:51,115 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:04:51,116 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:04:51,117 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:04:51,117 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:04:51,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:04:51,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:04:51,120 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:04:51,120 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:04:51,121 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:04:51,122 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:04:51,122 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:04:51,123 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:04:51,124 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:04:51,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:04:51,125 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:04:51,126 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:04:51,126 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:04:51,127 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:04:51,127 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:04:51,128 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:04:51,128 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:04:51,129 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:04:51,129 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:04:51,130 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:04:51,130 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:04:51,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:04:51,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:04:51,132 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:04:51,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:04:51,132 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:04:51,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:04:51,133 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:04:51,133 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:04:51,133 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:04:51,134 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:04:51,134 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f [2023-11-24 22:04:51,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:04:51,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:04:51,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:04:51,539 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:04:51,540 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:04:51,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-11-24 22:04:54,819 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:04:55,234 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:04:55,235 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/sv-benchmarks/c/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-11-24 22:04:55,264 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI/data/d91e9d5c1/ef3c8ea709fd4dae8f2c22ac7d119c0f/FLAG1b84e9dc7 [2023-11-24 22:04:55,284 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI/data/d91e9d5c1/ef3c8ea709fd4dae8f2c22ac7d119c0f [2023-11-24 22:04:55,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:04:55,289 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:04:55,291 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:04:55,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:04:55,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:04:55,299 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:04:55" (1/1) ... [2023-11-24 22:04:55,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b17780a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:55, skipping insertion in model container [2023-11-24 22:04:55,301 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:04:55" (1/1) ... [2023-11-24 22:04:55,356 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:04:55,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:04:55,929 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:04:56,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:04:56,093 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:04:56,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:56 WrapperNode [2023-11-24 22:04:56,094 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:04:56,096 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:04:56,096 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:04:56,096 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:04:56,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:56" (1/1) ... [2023-11-24 22:04:56,148 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:56" (1/1) ... [2023-11-24 22:04:56,208 INFO L138 Inliner]: procedures = 173, calls = 55, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 251 [2023-11-24 22:04:56,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:04:56,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:04:56,213 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:04:56,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:04:56,232 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:56" (1/1) ... [2023-11-24 22:04:56,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:56" (1/1) ... [2023-11-24 22:04:56,238 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:56" (1/1) ... [2023-11-24 22:04:56,274 INFO L175 MemorySlicer]: Split 32 memory accesses to 7 slices as follows [2, 5, 5, 2, 5, 2, 11]. 34 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 5, 5, 0, 5, 0, 1]. The 6 writes are split as follows [0, 0, 0, 1, 0, 1, 4]. [2023-11-24 22:04:56,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:56" (1/1) ... [2023-11-24 22:04:56,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:56" (1/1) ... [2023-11-24 22:04:56,298 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:56" (1/1) ... [2023-11-24 22:04:56,305 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:56" (1/1) ... [2023-11-24 22:04:56,308 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:56" (1/1) ... [2023-11-24 22:04:56,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:56" (1/1) ... [2023-11-24 22:04:56,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:04:56,320 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:04:56,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:04:56,320 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:04:56,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:56" (1/1) ... [2023-11-24 22:04:56,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:04:56,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:04:56,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:04:56,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:04:56,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 22:04:56,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 22:04:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 22:04:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 22:04:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-24 22:04:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-24 22:04:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-24 22:04:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-24 22:04:56,493 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-24 22:04:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 22:04:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 22:04:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 22:04:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 22:04:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 22:04:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-24 22:04:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-24 22:04:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-24 22:04:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:04:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:04:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-24 22:04:56,496 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-24 22:04:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:04:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 22:04:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 22:04:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 22:04:56,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 22:04:56,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 22:04:56,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-24 22:04:56,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-24 22:04:56,499 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-24 22:04:56,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:04:56,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:04:56,501 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 22:04:56,701 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:04:56,704 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:04:57,346 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:04:57,606 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:04:57,606 INFO L309 CfgBuilder]: Removed 24 assume(true) statements. [2023-11-24 22:04:57,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:04:57 BoogieIcfgContainer [2023-11-24 22:04:57,607 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:04:57,609 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:04:57,609 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:04:57,613 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:04:57,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:04:55" (1/3) ... [2023-11-24 22:04:57,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d97197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:04:57, skipping insertion in model container [2023-11-24 22:04:57,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:56" (2/3) ... [2023-11-24 22:04:57,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d97197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:04:57, skipping insertion in model container [2023-11-24 22:04:57,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:04:57" (3/3) ... [2023-11-24 22:04:57,616 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_09-ptrmunge_racing.i [2023-11-24 22:04:57,637 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:04:57,637 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2023-11-24 22:04:57,637 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:04:57,723 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-24 22:04:57,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 153 transitions, 326 flow [2023-11-24 22:04:57,859 INFO L124 PetriNetUnfolderBase]: 47/279 cut-off events. [2023-11-24 22:04:57,860 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-24 22:04:57,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 279 events. 47/279 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1586 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 169. Up to 8 conditions per place. [2023-11-24 22:04:57,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 153 transitions, 326 flow [2023-11-24 22:04:57,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 153 transitions, 326 flow [2023-11-24 22:04:57,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:04:57,913 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f128a78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:04:57,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2023-11-24 22:04:57,919 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 22:04:57,919 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-24 22:04:57,920 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:04:57,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:04:57,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 22:04:57,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-24 22:04:57,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:57,930 INFO L85 PathProgramCache]: Analyzing trace with hash 651421, now seen corresponding path program 1 times [2023-11-24 22:04:57,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:57,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162669280] [2023-11-24 22:04:57,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:57,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:58,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:58,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:58,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162669280] [2023-11-24 22:04:58,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162669280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:58,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:58,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:04:58,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133377366] [2023-11-24 22:04:58,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:58,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:04:58,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:58,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:04:58,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:04:58,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 153 [2023-11-24 22:04:58,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 153 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:04:58,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:04:58,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 153 [2023-11-24 22:04:58,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:05:01,378 INFO L124 PetriNetUnfolderBase]: 7103/15719 cut-off events. [2023-11-24 22:05:01,379 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2023-11-24 22:05:01,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26788 conditions, 15719 events. 7103/15719 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 147519 event pairs, 4960 based on Foata normal form. 2790/16642 useless extension candidates. Maximal degree in co-relation 25623. Up to 8179 conditions per place. [2023-11-24 22:05:01,569 INFO L140 encePairwiseOnDemand]: 125/153 looper letters, 98 selfloop transitions, 2 changer transitions 0/165 dead transitions. [2023-11-24 22:05:01,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 165 transitions, 550 flow [2023-11-24 22:05:01,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:05:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:05:01,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-11-24 22:05:01,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7516339869281046 [2023-11-24 22:05:01,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-11-24 22:05:01,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-11-24 22:05:01,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:05:01,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-11-24 22:05:01,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:01,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:01,606 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:01,608 INFO L175 Difference]: Start difference. First operand has 128 places, 153 transitions, 326 flow. Second operand 3 states and 345 transitions. [2023-11-24 22:05:01,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 165 transitions, 550 flow [2023-11-24 22:05:01,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 165 transitions, 550 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 22:05:01,625 INFO L231 Difference]: Finished difference. Result has 126 places, 125 transitions, 274 flow [2023-11-24 22:05:01,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=126, PETRI_TRANSITIONS=125} [2023-11-24 22:05:01,632 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -2 predicate places. [2023-11-24 22:05:01,633 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 125 transitions, 274 flow [2023-11-24 22:05:01,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:01,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:01,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 22:05:01,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:05:01,635 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-24 22:05:01,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:01,636 INFO L85 PathProgramCache]: Analyzing trace with hash 651422, now seen corresponding path program 1 times [2023-11-24 22:05:01,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:01,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702737561] [2023-11-24 22:05:01,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:01,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:05:01,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:05:01,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702737561] [2023-11-24 22:05:01,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702737561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:05:01,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:05:01,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:05:01,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554397729] [2023-11-24 22:05:01,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:05:01,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:05:01,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:05:01,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:05:01,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:05:01,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 153 [2023-11-24 22:05:01,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 125 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:01,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:05:01,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 153 [2023-11-24 22:05:01,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:05:03,981 INFO L124 PetriNetUnfolderBase]: 6020/14205 cut-off events. [2023-11-24 22:05:03,982 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-11-24 22:05:04,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24170 conditions, 14205 events. 6020/14205 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 137225 event pairs, 2640 based on Foata normal form. 1/12269 useless extension candidates. Maximal degree in co-relation 23270. Up to 9321 conditions per place. [2023-11-24 22:05:04,102 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 78 selfloop transitions, 2 changer transitions 0/146 dead transitions. [2023-11-24 22:05:04,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 146 transitions, 476 flow [2023-11-24 22:05:04,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:05:04,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:05:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2023-11-24 22:05:04,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6230936819172114 [2023-11-24 22:05:04,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2023-11-24 22:05:04,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2023-11-24 22:05:04,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:05:04,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2023-11-24 22:05:04,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:04,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:04,123 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:04,129 INFO L175 Difference]: Start difference. First operand has 126 places, 125 transitions, 274 flow. Second operand 3 states and 286 transitions. [2023-11-24 22:05:04,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 146 transitions, 476 flow [2023-11-24 22:05:04,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 146 transitions, 472 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:05:04,163 INFO L231 Difference]: Finished difference. Result has 127 places, 125 transitions, 280 flow [2023-11-24 22:05:04,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=127, PETRI_TRANSITIONS=125} [2023-11-24 22:05:04,165 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -1 predicate places. [2023-11-24 22:05:04,165 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 125 transitions, 280 flow [2023-11-24 22:05:04,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:04,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:04,166 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-24 22:05:04,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:05:04,167 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-24 22:05:04,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:04,167 INFO L85 PathProgramCache]: Analyzing trace with hash 331082652, now seen corresponding path program 1 times [2023-11-24 22:05:04,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:04,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712499319] [2023-11-24 22:05:04,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:04,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:05:04,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:05:04,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712499319] [2023-11-24 22:05:04,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712499319] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:05:04,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322531108] [2023-11-24 22:05:04,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:04,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:05:04,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:05:04,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:05:04,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 22:05:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:04,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 22:05:04,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:05:04,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 22:05:04,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:05:04,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:05:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:05:04,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322531108] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:05:04,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:05:04,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2023-11-24 22:05:04,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753230787] [2023-11-24 22:05:04,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:05:04,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 22:05:04,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:05:04,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 22:05:04,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-24 22:05:05,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 153 [2023-11-24 22:05:05,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 125 transitions, 280 flow. Second operand has 9 states, 9 states have (on average 69.33333333333333) internal successors, (624), 9 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:05,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:05:05,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 153 [2023-11-24 22:05:05,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:05:05,368 INFO L124 PetriNetUnfolderBase]: 64/251 cut-off events. [2023-11-24 22:05:05,368 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-24 22:05:05,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 251 events. 64/251 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1091 event pairs, 36 based on Foata normal form. 42/269 useless extension candidates. Maximal degree in co-relation 443. Up to 123 conditions per place. [2023-11-24 22:05:05,370 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 45 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-11-24 22:05:05,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 74 transitions, 252 flow [2023-11-24 22:05:05,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:05:05,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 22:05:05,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2023-11-24 22:05:05,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5179738562091504 [2023-11-24 22:05:05,373 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 317 transitions. [2023-11-24 22:05:05,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 317 transitions. [2023-11-24 22:05:05,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:05:05,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 317 transitions. [2023-11-24 22:05:05,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:05,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:05,378 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:05,378 INFO L175 Difference]: Start difference. First operand has 127 places, 125 transitions, 280 flow. Second operand 4 states and 317 transitions. [2023-11-24 22:05:05,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 74 transitions, 252 flow [2023-11-24 22:05:05,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 74 transitions, 246 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 22:05:05,381 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 112 flow [2023-11-24 22:05:05,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-11-24 22:05:05,383 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -70 predicate places. [2023-11-24 22:05:05,383 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 112 flow [2023-11-24 22:05:05,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 69.33333333333333) internal successors, (624), 9 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:05,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:05,384 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-24 22:05:05,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-24 22:05:05,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f52611-c088-4eeb-bfb9-42513c9a1387/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:05:05,590 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-11-24 22:05:05,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:05,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1673628424, now seen corresponding path program 1 times [2023-11-24 22:05:05,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:05,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218523810] [2023-11-24 22:05:05,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:05,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:05:05,670 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:05:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:05:05,714 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 22:05:05,714 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 22:05:05,715 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (54 of 55 remaining) [2023-11-24 22:05:05,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 55 remaining) [2023-11-24 22:05:05,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 55 remaining) [2023-11-24 22:05:05,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 55 remaining) [2023-11-24 22:05:05,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 55 remaining) [2023-11-24 22:05:05,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 55 remaining) [2023-11-24 22:05:05,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 55 remaining) [2023-11-24 22:05:05,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 55 remaining) [2023-11-24 22:05:05,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 55 remaining) [2023-11-24 22:05:05,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10ASSERT_VIOLATIONMEMORY_LEAK (45 of 55 remaining) [2023-11-24 22:05:05,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 55 remaining) [2023-11-24 22:05:05,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 55 remaining) [2023-11-24 22:05:05,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 55 remaining) [2023-11-24 22:05:05,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 55 remaining) [2023-11-24 22:05:05,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 55 remaining) [2023-11-24 22:05:05,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 55 remaining) [2023-11-24 22:05:05,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 55 remaining) [2023-11-24 22:05:05,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 55 remaining) [2023-11-24 22:05:05,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 55 remaining) [2023-11-24 22:05:05,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 55 remaining) [2023-11-24 22:05:05,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (34 of 55 remaining) [2023-11-24 22:05:05,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 55 remaining) [2023-11-24 22:05:05,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 55 remaining) [2023-11-24 22:05:05,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 55 remaining) [2023-11-24 22:05:05,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 55 remaining) [2023-11-24 22:05:05,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 55 remaining) [2023-11-24 22:05:05,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 55 remaining) [2023-11-24 22:05:05,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 55 remaining) [2023-11-24 22:05:05,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 55 remaining) [2023-11-24 22:05:05,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 55 remaining) [2023-11-24 22:05:05,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr10ASSERT_VIOLATIONMEMORY_LEAK (24 of 55 remaining) [2023-11-24 22:05:05,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 55 remaining) [2023-11-24 22:05:05,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 55 remaining) [2023-11-24 22:05:05,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 55 remaining) [2023-11-24 22:05:05,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 55 remaining) [2023-11-24 22:05:05,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 55 remaining) [2023-11-24 22:05:05,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 55 remaining) [2023-11-24 22:05:05,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 55 remaining) [2023-11-24 22:05:05,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 55 remaining) [2023-11-24 22:05:05,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 55 remaining) [2023-11-24 22:05:05,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 55 remaining) [2023-11-24 22:05:05,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10ASSERT_VIOLATIONMEMORY_LEAK (13 of 55 remaining) [2023-11-24 22:05:05,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 55 remaining) [2023-11-24 22:05:05,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 55 remaining) [2023-11-24 22:05:05,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 55 remaining) [2023-11-24 22:05:05,742 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 55 remaining) [2023-11-24 22:05:05,742 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 55 remaining) [2023-11-24 22:05:05,742 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 55 remaining) [2023-11-24 22:05:05,742 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 55 remaining) [2023-11-24 22:05:05,743 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 55 remaining) [2023-11-24 22:05:05,743 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 55 remaining) [2023-11-24 22:05:05,743 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 55 remaining) [2023-11-24 22:05:05,743 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr10ASSERT_VIOLATIONMEMORY_LEAK (2 of 55 remaining) [2023-11-24 22:05:05,743 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 55 remaining) [2023-11-24 22:05:05,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 55 remaining) [2023-11-24 22:05:05,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 22:05:05,744 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-24 22:05:05,747 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-24 22:05:05,747 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-24 22:05:05,856 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-24 22:05:05,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 277 transitions, 598 flow [2023-11-24 22:05:06,069 INFO L124 PetriNetUnfolderBase]: 161/839 cut-off events. [2023-11-24 22:05:06,069 INFO L125 PetriNetUnfolderBase]: For 72/79 co-relation queries the response was YES. [2023-11-24 22:05:06,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 839 events. 161/839 cut-off events. For 72/79 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 6242 event pairs, 2 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 521. Up to 32 conditions per place. [2023-11-24 22:05:06,097 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 277 transitions, 598 flow [2023-11-24 22:05:06,120 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 277 transitions, 598 flow [2023-11-24 22:05:06,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:05:06,122 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f128a78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:05:06,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2023-11-24 22:05:06,125 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 22:05:06,125 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-24 22:05:06,125 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:05:06,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:06,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 22:05:06,126 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2023-11-24 22:05:06,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:06,127 INFO L85 PathProgramCache]: Analyzing trace with hash 924496, now seen corresponding path program 1 times [2023-11-24 22:05:06,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:06,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952663240] [2023-11-24 22:05:06,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:06,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:05:06,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:05:06,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952663240] [2023-11-24 22:05:06,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952663240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:05:06,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:05:06,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:05:06,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851545874] [2023-11-24 22:05:06,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:05:06,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:05:06,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:05:06,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:05:06,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:05:06,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 277 [2023-11-24 22:05:06,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 277 transitions, 598 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:06,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:05:06,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 277 [2023-11-24 22:05:06,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand